Contact info

We are Celebrating Making Offices Shine since 1984!

Since 1984, Gemini Janitorial Services has been cleaning professional offices in the Greater Delaware Valley. In addition to commercial cleaning services, the company also offers a line of environmentally-friendly products and supplies. The company was founded by Janet Killian-Welte, current President and CEO. Janet is certified as 100% owner by the Womens’ Business Enterprise National Council.

1607 East Newport Pike
Wilmington, DE 19804

Telephone: (302) 654-5310
FAX: (302) 654-5312

Office Hours, M-F 8:30 AM– 5:00 PM


Janet Killian-Welte, President
Michelle Segarra, Administration
Pat Forester, Marketing Coordinator

Gemini is always on the lookout for great employees. If you think you have what it take, fill out our
Employment Application

Request a Cleaning Service Quote